Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — PREFIX/551

ZIP codes starting with 551

ZIP codes
44
States
MN
Largest city
Saint Paul, MN
Population
818,149

The first three digits of a ZIP code identify a sectional center facility — the postal processing plant that sorts mail for the area. It is a mail-routing grouping, not an administrative boundary.

Every ZIP code in 551xx

ZIP codes starting with 551
ZIP City Type Population Median income Median home
55101 Saint Paul , MN Standard 7,911 $64,863 $260,400
55102 Saint Paul , MN Standard 19,630 $76,406 $292,200
55103 Saint Paul , MN Standard 13,125 $48,390 $257,500
55104 Saint Paul , MN Standard 45,762 $75,712 $317,700
55105 Saint Paul , MN Standard 28,617 $107,248 $470,100
55106 Saint Paul , MN Standard 56,708 $70,187 $241,800
55107 Saint Paul , MN Standard 15,377 $74,531 $269,600
55108 Saint Paul , MN Standard 15,224 $86,308 $375,600
55109 Saint Paul , MN Standard 33,461 $86,776 $315,600
55110 Saint Paul , MN Standard 37,305 $101,296 $360,500
55111 Saint Paul , MN Standard 233 — —
55112 Saint Paul , MN Standard 45,346 $93,838 $358,500
55113 Saint Paul , MN Standard 40,819 $86,792 $350,200
55114 Saint Paul , MN Standard 5,049 $62,766 $319,800
55115 Saint Paul , MN Standard 8,949 $124,234 $488,400
55116 Saint Paul , MN Standard 25,918 $81,141 $418,200
55117 Saint Paul , MN Standard 44,697 $70,771 $280,500
55118 Saint Paul , MN Standard 29,564 $87,340 $350,600
55119 Saint Paul , MN Standard 44,567 $81,865 $277,500
55120 Saint Paul , MN Standard 5,058 $116,346 $515,600
55121 Saint Paul , MN Standard 9,198 $87,152 $301,400
55122 Saint Paul , MN Standard 32,261 $96,823 $356,600
55123 Saint Paul , MN Standard 26,501 $139,215 $461,200
55124 Saint Paul , MN Standard 55,658 $97,727 $370,400
55125 Saint Paul , MN Standard 44,185 $119,260 $416,100
55126 Saint Paul , MN Standard 27,456 $108,217 $384,900
55127 Saint Paul , MN Standard 18,090 $117,917 $433,200
55128 Saint Paul , MN Standard 29,384 $93,210 $312,800
55129 Saint Paul , MN Standard 34,120 $143,795 $534,900
55130 Saint Paul , MN Standard 17,775 $54,130 $236,000
55131 Saint Paul , MN No street area — — —
55133 Saint Paul , MN No street area — — —
55144 Saint Paul , MN No street area — — —
55145 Saint Paul , MN No street area — — —
55146 Saint Paul , MN No street area — — —
55150 Mendota , MN Standard 201 $111,250 $310,000
55155 Saint Paul , MN Standard 0 — —
55164 Saint Paul , MN No street area — — —
55165 Saint Paul , MN No street area — — —
55170 Saint Paul , MN No street area — — —
55172 Saint Paul , MN No street area — — —
55175 Saint Paul , MN No street area — — —
55187 Saint Paul , MN No street area — — —
55188 Saint Paul , MN No street area — — —

Cite this page

zipcodes.pro. “ZIP codes starting with 551.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/prefix/551

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